DALTON TRANSACTIONS
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2024
·Vol. 53
·期 6
·2526-2533
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IF 3.5
Jia-Min Lyu,Shen Yu,Zhan Liu,He-You Du,Ming-Hui Sun,Chun-Mu Guo,Yi-Long Wang,Yu Li,Li-Hua Chen,Bao-Lian Su
Excessive emission of CO2 into the atmosphere has severely impacted the global ecological environment. Converting CO2 into valuable chemicals and fuels is of great significance for sustainable development. However, low activity and undesirable selectivity often result from the inherent inertness of CO2. Herein, K- or/and Zn-modified Fe-based catalysts were prepared by an incipient-wetness impregnation method for CO2 hydrogenation via a cascade reaction. The results indicate that K species exist as K2O while Zn species exist as ZnFe2O4. In the CO2 hydrogenation pathway, K2O facilitates the adsorption of CO2 and restrains the adsorption of H2, accelerating the transformation of CO2 into C2–C4 olefins rather than paraffins while Zn species promote the dispersion of Fe species, leading to improved activity. Synergistically, a K- and Zn-modified Fe-based catalyst (2Zn–10K–Fe/Al) shows excellent catalytic CO2 hydrogenation activity, achieving a CO2 conversion of 77% which is 1.8 times that (42%) of the unmodified Fe-based catalyst (Fe/Al). Our catalyst also shows a significantly promoted selectivity to C2–C4 olefins of 17% in comparison with the Fe/Al catalyst (0%). It is envisioned that such a binary effect of elements might contribute to the low-cost and industrial production of Fe-based catalysts for selective CO2 conversion.
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FOOD CHEMISTRY
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2025
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IF 9.8
Xiao-Juan Wang,Kai-ting Liu,Chuan-Wan Wei,Shu-Qin Gao,Ying-Wu Lin
A metallohydrogel designated as 2-PY-Fe was synthesized via a straightforward method, exhibiting both peroxidase-like and oxidase-like activities. On one hand, based on its peroxidase-like activity, 2-PY-Fe can serve as a catalyst for the degradation of various dyes. On the other hand, 2-PY-Fe metallohydrogel was used as an oxidase-like nanozyme to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to oxTMB. The addition of nitrite can trigger the diazotization of oxTMB, resulting in a decrease in the absorption peak at 654 nm and the emergence of a new signal peak at 446 nm resulting from the diazotization of oxTMB. Simultaneously, the existence of nitrite induces the decrease of the electro-oxidation signal of TMB and presents a new electrochemical signal from nitrite itself. A ratiometric colorimetric/electrochemical method and a smartphone-assisted detection method were established, combining the oxidase-mimicking catalysis and diazotization reaction. Additionally, this developed method was applied to monitor nitrite in real samples.
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Applied Materials Today
·
2025
·
IF 6.9
Zerong Wang,Ge Yan,Yi Ning,Xiaoli Zhou,Xin Lu,Qianqian Zhou,Qiwei Tian
Transarterial embolization (TAE) is a primary clinical treatment for hepatocellular carcinoma (HCC); however, its therapeutic efficacy is limited by its functional constraints. To enhance treatment outcomes, this study aims to develop a multifunctional embolic microsphere, LUT-Fe@PVA, for the combined treatment of HCC. This approach leverages a synergistic strategy that integrates TAE, sonodynamic therapy (SDT), and chemodynamic therapy (CDT) to improve the therapeutic efficacy. The LUT-Fe@PVA microspheres were synthesized via a microemulsion crosslinking method and loaded with luteolin-iron complexes to enable ultrasound-triggered reactive oxygen species (ROS) generation and Fenton reaction for enhanced tumor destruction. In vitro results demonstrated that the combination therapy significantly kills the tumor cells. In vivo, 18 F-FDG microPET/CT imaging revealed significantly reduced uptake values, while histological analysis confirmed extensive tumor cell necrosis and apoptosis in the combined therapy group. This study presents a promising multifunctional approach for HCC treatment by integrating embolization, SDT, and CDT, offering a novel strategy for effective and selective tumor treatment with minimal side effects.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Huaqi Zhang,Siyi Chen,Zhenhao Wang,Chaoran Fan,Tianming Li,Na Yan,Yian Zheng
Semi-coke (SC), a solid waste generated from the dry distillation of oil shale, is rich in organic matter, classifying it as a functional carbon-based material. Combining the progressive advantages of functionalized carbon-based materials in advanced oxidation technology, this study prepared Fe-N co-doped semi-coke (Fe-N-SC) through a facile one-step pyrolysis of SC pre-impregnated with potassium ferricyanide. Under visible light (VIS) irradiation, Fe-N-SC was able to activate periodate (PI) to establish an Fe-N-SC/PI/VIS system for degrading norfloxacin (NOR). The results showed that this system achieved 99.5%-NOR removal, with a mineralization degree of up to 68.6%- within 30 min. Furthermore, Fe-N-SC exhibited stable performance over a wide pH range (3−9) and maintained high NOR removal efficiency in real water matrices, indicating its robustness and practical applicability. Electron paramagnetic resonance and free radical quenching experiments revealed that h + and ·OH were the primary species responsible for NOR degradation in Fe-N-SC/PI/VIS system. The proposed mechanism involved reactive oxygen species-driven oxidative cleavage of piperazine ring in NOR, leading to its stepwise breakdown and mineralization into harmless end-products. During the degradation process, no toxic intermediates were detected, highlighting the environmental safety of Fe-N-SC/PI/VIS system for sustainable and highly effective removal of antibiotics from aquatic environment.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
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IF 6.6
Hai Qin,Xiaoting Liao,Qun Tang,Bin Huang,Zhiming Zou,Lin Xu,Heping Li
Developing biopolymer-based smart active packaging materials with antimicrobial and colorimetric ammonia-sensitive function has become an emerging strategy to ensure food safety. To address the shortcomings of biopolymer film material with single function, weak mechanical and barrier performances, innovative corn starch (CS)-based smart active packaging film with antimicrobial and colorimetric ammonia-sensitive function was manufactured by constructing novel nano Fe-HIA complex as functional filler. Results revealed that the manufactured CS/Fe-HIA films had uniform and intact morphologies resulting from robust hydrogen bonds between CS and Fe-HIA, and displayed significantly improved performances dependent on Fe-HIA content. Specially, the CS-based smart active film with relatively high Fe-HIA content (5 wt%) was much more sensitive to ammonia, showing noticeable color transition from brown to yellow. The well distributed Fe-HIA significantly promoted hydrophobicity (96.0°), water barrier, thermal stability, mechanical strength (6.8 MPa), and UV-blocking (100 %) performances of the film. Furthermore, CS/Fe-HIA films possessed good antibacterial activity (over 90 %), long-term color stability, biocompatibility, and biodegradability. In freshness monitoring trial, CS/Fe-HIA films were proved to be effective in real-time and visual monitoring of prawn spoilage. This study presents a new strategy for creating advanced biopolymer-based antimicrobial and colorimetric ammonia-sensitive film, boosting related application in smart active food packaging.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Shaoyan Zhang,Wen Zhang,Xinyao Zhao,Xin Li,Jian Wang,Ji Li,Yanqing Liu,Xueying Cheng,Renquan Guan,Junkai Zhang
This study reports the synthesis of MIL–88B(Fe)/Bi 3 O 4 Br, an efficient Z -scheme heterojunction photocatalyst for metronidazole (MNZ) degradation. The composite achieved a degradation efficiency of 95.2 % under visible light irradiation, outperforming the single-component catalysts (MIL–88B(Fe): 39.0 %, Bi 3 O 4 Br: 71.5 %). Photocatalytic treatment reduced biotoxicity, indicating its potential for use and environmental safety. The degradation process of MNZ was revealed by integrating LC–MS data with Fukui function analysis. Photoelectrochemical findings indicate that MIL–88B(Fe) enhanced efficiency, facilitated charge separation, and augmented the spectral response of Bi 3 O 4 Br. The Z–Scheme charge transfer and the function of the built–in electric field were validated by in situ XPS. DFT calculations revealed synergistic effects in the composite system, enhancing the adsorption and photocatalytic properties for MNZ. This study proposed a thorough degradation process that underpinned the development of effective photocatalysts.
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Materials Today Communications
·
2025
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IF 4.5
Nanqing Zhang,Xianhua Bian,Zhenglong Zhu,Xin Huang,Ping-an Yang
To effectively absorb electromagnetic waves and reduce the impact of electromagnetic radiation on the health of residents and the normal operation of electronic devices, core-shell nanocomposite fibers (Fe NWs@SiO 2 @Ag) were successfully prepared by the liquid-phase hydrolysis method. The microwave absorption properties of core-shell nanocomposite nanofibers with different ratios were tested and analyzed using the coaxial method. The results show that the sample with a molar ratio of Fe:SiO 2 :Ag of 1:0.1:1 has the best comprehensive performance. This sample exhibits excellent microwave absorbing performance. When the mass filling fraction is 25 wt%, its minimum reflection loss (RL min ) can reach −61.55 dB, and the effective absorption bandwidth (EAB) can reach 3.52 GHz. The excellent microwave absorbing performance can be attributed to the interfacial polarization effect of the core-shell nanocomposite structure, the magnetic loss and conduction loss of each layer of materials, and the small-scale effect caused by the one-dimensional structure. This study can provide a methodological reference for the preparation of high-performance absorbing materials.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Ruize Jia,Ronghao Man,Liannan Shang
The rapid development of mineral resources exploitation and industries has brought a large amount of wastewater containing cadmium (Cd) and arsenic (As) to the environment. Among these, the mining industry has become a major challenge in wastewater treatment due to the coexistence of both pollutants at high concentrations. Developing a sustainable and low-cost adsorbent capable of simultaneously adsorbing both anionic and cationic pollutants is a key breakthrough direction for solving this practical problem. In this study, chitosan-grafted Fe-pillared bentonite (CS@Fe@Bt) was synthesized using natural bentonite, aiming to provide an efficient material for treating Cd and As co-contaminated wastewater (especially mining industry wastewater). Results suggested that the specific surface area (SSA) and total pore volume of Fe-pillared bentonite increased by 1.85 and 1.32 times, respectively, compared with the raw bentonite. Pillaring the bentonite also significantly enhanced its chitosan loading capacity, improving both the structural stability and adsorption performance of CS@Fe@Bt. Kinetic and isothermal adsorption experiments revealed that CS@Fe@Bt possessed a multilayer heterogeneous surface, with Cd and As adsorption following the Pseudo-second-order kinetic model. CS@Fe@Bt showed strong adsorption capacity for both Cd(II) and As(III) when the initial pH i of the solution ranged from 6 to 8. The maximum adsorption capacities ( Q m ) for Cd(II) and As(III) were 80.79 mg·g -1 and 34.90 mg·g -1 , respectively, surpassing most comparable adsorbents. The primary adsorption mechanisms of CS@Fe@Bt in Cd(II) and As(III) co-polluted water included oxidation (57.81% of As(III) was converted to low-toxicity As(V)), electrostatic interactions, and the formation of B-type ternary surface complexes (CS@Fe@Bt-As-Cd). Additional mechanisms included ion exchange, pore adsorption. These findings highlight the potential of CS@Fe@Bt as an effective adsorbent for Cd(II) and As(III) adsorption, providing technical support for addressing practical wastewater treatment challenges.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Liping Zhang,Huitong Li,Mengnan Duan,Weiwei Wang,Ran Mu,Zehua Pi,Yubin Shang
Coking reverse osmosis concentrates (ROCs) are characterized by a high organic content, complex composition, and difficulty in biological degradation. To achieve the zero liquid discharge (ZLD) strategy, ROCs need to be treated urgently. This work aims to prepare a modified catalyst under high-efficiency activated alumina (γ-Al 2 O 3 ) loaded with Fe and Co bimetals and to degrade m-cresol as a typical pollutant in actual coking ROCs. The results showed that Fe and Co metals were successfully loaded. Meanwhile, the catalyst enhances the reactive active sites, reduces the activation energy of the reaction, and improves the degradation efficiency. The degradation mechanism and removal process were investigated. The results showed that with the optimal conditions, as ozone dosage of 50 mg/L, gas flow rate of 400 mL/min, catalyst dosage of 30 g/L, and pH value of 9, the removal rates of COD, TOC, and UV 254 were 75.61 %, 56.22 %, and 84.14 %, respectively. This study provides a better treatment option for the degradation of m-cresols in coking ROCs.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
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IF 20.2
Ruonan Guo,Changsheng Guo,Zenghui Bi,Heng Zhang,Ningqing Lv,Beidou Xi,Guangzhi Hu,Jian Xu
A novel iron-based single-atom catalyst (Fe SAC) integrated into a catalytic membrane was developed for peroxymonosulfate (PMS) activation and organic pollutant degradation. The Fe SAC membrane was synthesized using a co-precipitation method and acid leaching treatment, and its catalytic activity was evaluated in a continuous flow-through system using nitenpyram (NPR) as a model pollutant. The Fe SAC membrane/PMS system achieved over 90% NPR removal efficiency with low iron leaching (2.85–8.05 μg/L) during 10 hours of continuous operation, and maintained over 80% NPR removal in tap water, Yellow River water, and Yangtze River water. Experimental and theoretical analyses revealed that the strong chemisorption and electron transfer between PMS and FeN4 led to the dominant production of singlet oxygen for NPR degradation. This study demonstrates the potential of SAC-based catalytic membranes for efficient and stable attenuation of refractory organic pollutants in water treatment applications.
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Energy Storage Materials
·
2025
·
IF 20.2
Gaige Zhang,Changchun Ye,Tan Li,Shumin Liu,Wei-Hsiang Huang,Zhaoxi Chen,Xiaochao Ren,Jiajin Lin,Jin Yang,Yongcai Qiu,Guangxu Chen
Repurposing spent battery materials into electrocatalysts offers a dual-functional strategy to mitigate environmental burdens and create value-added products. However, developing efficient conversion methods to transform spent cathodes into high-activity, cost-effective catalysts remains a critical challenge. Here, we report a Fe-doped LCO/Co 3 O 4 heterogeneous interface catalyst (Fe-LCO/Co 3 O 4 ) synthesized by quenching the calcinated spent LiCoO 2 (SLCO) in the Fe 3+ solution for promoting the performance of the oxygen evolution reaction (OER). Fe-LCO/Co 3 O 4 features outstanding OER activity, including a low overpotential of 312 mV at 10 mA cm −2 , a Tafel slope of 34 mV dec −1 , and remarkable stability exceeding 1000 h, better than the majority of cobalt-based electrocatalysts. Experimental results and density functional theory reveal that Fe ions coupled with LCO/Co 3 O 4 heterostructures alter the adsorption configuration of *OH and *O, optimizing binding capabilities and effectively reducing the rate-determining step of *OOH dehydrogenation energy barrier, thereby accelerating the OER. This study introduces a novel strategy for the sustainable reuse of spent cathode materials, providing insights into the rational design of high-performance OER electrocatalysts.
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CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Mengyang Xu,Bingqing Chang,Jinze Li,Huiqin Wang,Pengwei Huo
The assembly of different Metal organic framework (MOFs) into hybrid heterostructures has proven to be a promising strategy that can effectively break through the limited regulatory capacity of single metal sites. Here, an S-scheme heterostructure (Fe 3 Ni-MOF) based on homologous ligands (1,4-phthalic acid) of ultra-thin Ni-MOF and Fe-MOF nanoparticles with directional electron transport channels, was developed and used it for photoreduction of CO 2 . Under the S-scheme electric field mechanism, the photogenerated carrier can achieve efficient directional separation through Fe–O–Ni atomic bond, which significantly reduces the energy barrier of the rate-determining step. Results show that the performance of Fe 3 Ni-MOF (63.5 μmol g –1 ) was 20 and 3.2 times higher than that of Ni-MOF and Fe-MOF, respectively, and exhibits excellent CO selectivity (96.4%) and stability. Transmission electron microscopy and atomic force microscopy revealed the two-molecular-layers structure of Ni-MOF and the micro-assembly structure of Fe 3 Ni-MOF, which can shorten the electron transport distance and increase the molecular mass transfer rate. X-ray photoelectron spectroscopy, electron spin resonance and electron density difference calculations reveal that interfacial electric fields and atomic bonds work together to promote directional carrier separation, resulting in the accumulation of holes on Ni-MOF and electrons on Fe-MOF. The Gibbs free energy calculation and in-situ Fourier transformed infrared spectroscopy validate that the micro-assembled S-scheme heterostructures with directional electron transport channels can significantly reduce the activation energy barrier of the reaction. This study not only proves the feasibility of constructing MOFs S-scheme heterostructures using homologous ligands, but also provides a new way to overcome the limitations of monometallic MOFs. This strategy is expected to open up a new avenue to design efficient photocatalysts.
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